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isci: unify isci_remote_device and scic_sds_remote_device

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Remove the distinction between these two implementations and unify on
isci_remote_device (local instances named idev).

Reported-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
This commit is contained in:
Dan Williams
2011-06-30 16:31:37 -07:00
parent ffe191c92f
commit 78a6f06e0e
11 changed files with 365 additions and 437 deletions
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148
drivers/scsi/isci/remote_device.h
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@@ -70,65 +70,14 @@ enum scic_remote_device_not_ready_reason_code {
SCIC_REMOTE_DEVICE_NOT_READY_REASON_CODE_MAX
};
struct scic_sds_remote_device {
/**
* This field contains the information for the base remote device state
* machine.
*/
struct sci_base_state_machine sm;
/**
* This field is the programmed device port width. This value is
* written to the RCN data structure to tell the SCU how many open
* connections this device can have.
*/
u32 device_port_width;
/**
* This field is the programmed connection rate for this remote device. It is
* used to program the TC with the maximum allowed connection rate.
*/
enum sas_linkrate connection_rate;
/**
* This filed is assinged the value of true if the device is directly
* attached to the port.
*/
bool is_direct_attached;
/**
* This filed contains a pointer back to the port to which this device
* is assigned.
*/
struct isci_port *owning_port;
/**
* This field contains the SCU silicon remote node context specific
* information.
*/
struct scic_sds_remote_node_context rnc;
/**
* This field contains the stated request count for the remote device. The
* device can not reach the SCI_DEV_STOPPED until all
* requests are complete and the rnc_posted value is false.
*/
u32 started_request_count;
/**
* This field contains a pointer to the working request object. It is only
* used only for SATA requests since the unsolicited frames we get from the
* hardware have no Tag value to look up the io request object.
*/
struct isci_request *working_request;
/**
* This field contains the reason for the remote device going not_ready. It is
* assigned in the state handlers and used in the state transition.
*/
u32 not_ready_reason;
};
/**
* isci_remote_device - isci representation of a sas expander / end point
* @device_port_width: hw setting for number of simultaneous connections
* @connection_rate: per-taskcontext connection rate for this device
* @working_request: SATA requests have no tag we for unaccelerated
* protocols we need a method to associate unsolicited
* frames with a pending request
*/
struct isci_remote_device {
#define IDEV_START_PENDING 0
#define IDEV_STOP_PENDING 1
@@ -143,7 +92,16 @@ struct isci_remote_device {
struct domain_device *domain_dev;
struct list_head node;
struct list_head reqs_in_process;
struct scic_sds_remote_device sci;
struct sci_base_state_machine sm;
u32 device_port_width;
enum sas_linkrate connection_rate;
bool is_direct_attached;
struct isci_port *owning_port;
struct scic_sds_remote_node_context rnc;
/* XXX unify with device reference counting and delete */
u32 started_request_count;
struct isci_request *working_request;
u32 not_ready_reason;
};
#define ISCI_REMOTE_DEVICE_START_TIMEOUT 5000
@@ -191,7 +149,7 @@ void isci_device_clear_reset_pending(struct isci_host *ihost,
* successfully stopped.
*/
enum sci_status scic_remote_device_stop(
struct scic_sds_remote_device *remote_device,
struct isci_remote_device *idev,
u32 timeout);
/**
@@ -207,7 +165,7 @@ enum sci_status scic_remote_device_stop(
* started.
*/
enum sci_status scic_remote_device_reset(
struct scic_sds_remote_device *remote_device);
struct isci_remote_device *idev);
/**
* scic_remote_device_reset_complete() - This method informs the device object
@@ -220,7 +178,7 @@ enum sci_status scic_remote_device_reset(
* is resuming operation.
*/
enum sci_status scic_remote_device_reset_complete(
struct scic_sds_remote_device *remote_device);
struct isci_remote_device *idev);
#define scic_remote_device_is_atapi(device_handle) false
@@ -335,27 +293,15 @@ enum scic_sds_remote_device_states {
SCI_DEV_FINAL,
};
static inline struct scic_sds_remote_device *rnc_to_dev(struct scic_sds_remote_node_context *rnc)
static inline struct isci_remote_device *rnc_to_dev(struct scic_sds_remote_node_context *rnc)
{
struct scic_sds_remote_device *sci_dev;
struct isci_remote_device *idev;
sci_dev = container_of(rnc, typeof(*sci_dev), rnc);
return sci_dev;
}
static inline struct isci_remote_device *sci_dev_to_idev(struct scic_sds_remote_device *sci_dev)
{
struct isci_remote_device *idev = container_of(sci_dev, typeof(*idev), sci);
idev = container_of(rnc, typeof(*idev), rnc);
return idev;
}
static inline struct domain_device *sci_dev_to_domain(struct scic_sds_remote_device *sci_dev)
{
return sci_dev_to_idev(sci_dev)->domain_dev;
}
static inline bool dev_is_expander(struct domain_device *dev)
{
return dev->dev_type == EDGE_DEV || dev->dev_type == FANOUT_DEV;
@@ -366,8 +312,8 @@ static inline bool dev_is_expander(struct domain_device *dev)
*
* This macro incrments the request count for this device
*/
#define scic_sds_remote_device_increment_request_count(sci_dev) \
((sci_dev)->started_request_count++)
#define scic_sds_remote_device_increment_request_count(idev) \
((idev)->started_request_count++)
/**
* scic_sds_remote_device_decrement_request_count() -
@@ -375,44 +321,44 @@ static inline bool dev_is_expander(struct domain_device *dev)
* This macro decrements the request count for this device. This count will
* never decrment past 0.
*/
#define scic_sds_remote_device_decrement_request_count(sci_dev) \
((sci_dev)->started_request_count > 0 ? \
(sci_dev)->started_request_count-- : 0)
#define scic_sds_remote_device_decrement_request_count(idev) \
((idev)->started_request_count > 0 ? \
(idev)->started_request_count-- : 0)
/**
* scic_sds_remote_device_get_request_count() -
*
* This is a helper macro to return the current device request count.
*/
#define scic_sds_remote_device_get_request_count(sci_dev) \
((sci_dev)->started_request_count)
#define scic_sds_remote_device_get_request_count(idev) \
((idev)->started_request_count)
/**
* scic_sds_remote_device_get_controller() -
*
* This macro returns the controller object that contains this device object
*/
#define scic_sds_remote_device_get_controller(sci_dev) \
scic_sds_port_get_controller(scic_sds_remote_device_get_port(sci_dev))
#define scic_sds_remote_device_get_controller(idev) \
scic_sds_port_get_controller(scic_sds_remote_device_get_port(idev))
/**
* scic_sds_remote_device_get_port() -
*
* This macro returns the owning port of this device
*/
#define scic_sds_remote_device_get_port(sci_dev) \
((sci_dev)->owning_port)
#define scic_sds_remote_device_get_port(idev) \
((idev)->owning_port)
/**
* scic_sds_remote_device_get_controller_peg() -
*
* This macro returns the controllers protocol engine group
*/
#define scic_sds_remote_device_get_controller_peg(sci_dev) \
#define scic_sds_remote_device_get_controller_peg(idev) \
(\
scic_sds_controller_get_protocol_engine_group(\
scic_sds_port_get_controller(\
scic_sds_remote_device_get_port(sci_dev) \
scic_sds_remote_device_get_port(idev) \
) \
) \
)
@@ -422,8 +368,8 @@ static inline bool dev_is_expander(struct domain_device *dev)
*
* This macro returns the remote node index for this device object
*/
#define scic_sds_remote_device_get_index(sci_dev) \
((sci_dev)->rnc.remote_node_index)
#define scic_sds_remote_device_get_index(idev) \
((idev)->rnc.remote_node_index)
/**
* scic_sds_remote_device_build_command_context() -
@@ -448,36 +394,36 @@ static inline bool dev_is_expander(struct domain_device *dev)
((device)->working_request = (request))
enum sci_status scic_sds_remote_device_frame_handler(
struct scic_sds_remote_device *sci_dev,
struct isci_remote_device *idev,
u32 frame_index);
enum sci_status scic_sds_remote_device_event_handler(
struct scic_sds_remote_device *sci_dev,
struct isci_remote_device *idev,
u32 event_code);
enum sci_status scic_sds_remote_device_start_io(
struct scic_sds_controller *controller,
struct scic_sds_remote_device *sci_dev,
struct isci_remote_device *idev,
struct isci_request *ireq);
enum sci_status scic_sds_remote_device_start_task(
struct scic_sds_controller *controller,
struct scic_sds_remote_device *sci_dev,
struct isci_remote_device *idev,
struct isci_request *ireq);
enum sci_status scic_sds_remote_device_complete_io(
struct scic_sds_controller *controller,
struct scic_sds_remote_device *sci_dev,
struct isci_remote_device *idev,
struct isci_request *ireq);
enum sci_status scic_sds_remote_device_suspend(
struct scic_sds_remote_device *sci_dev,
struct isci_remote_device *idev,
u32 suspend_type);
void scic_sds_remote_device_post_request(
struct scic_sds_remote_device *sci_dev,
struct isci_remote_device *idev,
u32 request);
#define scic_sds_remote_device_is_atapi(sci_dev) false
#define scic_sds_remote_device_is_atapi(idev) false
#endif /* !defined(_ISCI_REMOTE_DEVICE_H_) */